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Altitude Cardiac Stress Index (ACSI) Calculator – High-Altitude Athletes

Altitude Cardiac Stress Index (ACSI): Explanation and Clinical Context The ACSI is a pragmatic, heuristic tool intended to summarize cardiac stress loads for athletes training or competing at altitude. It integrates key determinants of hypoxic cardiac strain: absolute altitude and ascent rate (as proxies for ambient hypoxia burden), acclimatization time, resting oxygen saturation, heart rate, blood pressure, and hema

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ARVC Screening Probability in Athletes (Family History + ECG) Calculator

ARVC Screening Probability in Athletes: Explanation and Clinical Context This calculator assists sports cardiologists in assessing pre-test probability for arrhythmogenic cardiomyopathy (ARVC/ACM) in athletes using key signals: family history and characteristic ECG abnormalities. A first-degree relative with confirmed ARVC or a pathogenic variant markedly raises pre-test suspicion. Similarly, young-age sudden cardiac

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Athletic Heart vs Pathology Differentiation Score (Echo + ECG)

: Explanation and Clinical Context This tool is intended to assist clinicians in distinguishing physiological cardiac adaptation in athletes (“athlete’s heart”) from potentially pathological conditions such as hypertrophic cardiomyopathy, dilated cardiomyopathy, or arrhythmogenic right ventricular cardiomyopathy. The score integrates key features from resting ECG (e.g., T-wave inversion, pathological Q waves, bundle